HEAD-UP DISPLAY APPARATUS

摘要

A combiner for a head-up display apparatus has: a front surface; a rear surface; a plurality of grooves formed in a stripe shape so as to penetrate between the front surface and the rear surface in an upper end section; and a plurality of reflective protrusions each formed between each groove in the upper end section. Each reflective protrusion: has a triangular cross section; extends between the front surface and the rear surface; forms a pair of planar reflective surfaces inclined relative to the horizontal plane as a result of interposing therebetween a vertical angle pointing upwards in the triangular cross section; and reflects light to the side by using the reflective surfaces. The angle of the vertical angle in each reflective protrusion gradually increases from either the front surface or the rear surface, towards the other.

主权项

1. A head-up display apparatus comprising:
a combiner imaging a virtual image of a display image and displaying the display image visible from an interior of a vehicle, in the vehicle having a window shield, wherein the combiner includes:
a front surface that faces forward in the vehicle;a rear surface that faces rearward in the vehicle;a plurality of grooves that have a stripe shape to penetrate between the front surface and the rear surface on an upper end of the combiner; anda plurality of reflective projections that are provided between the plurality of grooves on the upper end, each of the reflective projections
extends between the front surface and the rear surface with a triangular cross section,provides a pair of planar reflective surfaces sloped from a horizontal plane, the pair of planar reflective surfaces sandwiching an apex angle pointed upward in the triangular cross section, andreflects light laterally by the planar reflective surfaces, and an angle of the apex angle in each of the reflective projections gradually increases from one of the front surface and the rear surface toward an other of the front surface and the rear surface.